Steam-trap.



United Kingdom ofeGreat Britain and Ires4 'Grangemouth, Scotland, haveinvented new' e ALEXANDER MALCOLM, or GEANGEMOUTH, SCOTLAND.

STEAM-TRAP."

'Application mea August 7,1907:4 'serial Nn. 387,402.

To all 'whom it may concern', l

Be it known that I, ALEXANDER MAL'-`- COLM, engineer, a subject of theKing ol the land, vand resident, of 1Q"- Charlotte street;

; and useful Improvements in Automatic Si;

- pipes and wet steam.

Figurel shows a sectional elevation ofthe 'wat-'er to any desired point.

phon Steam-Traps, ofA which the following is" a s ecification.

s teamtrap ford'raining water fromrsteam cylinders, due to condensationand improvedv automatic siphon steam trap.

' Fig. 2 is a sectional 4lan'view of the same.

The upper end of the steam trap-,a's shown, isl` designed to be screwedinto the pipe or cylinder to be drained of Water'so as to dependapproximately vertically therefrom, and the lowerv screwed end B maybeopenv to the 'atmosphere or' into aneth. length of tubingforconductinthe drainage e steamtra is formed with a `main chamber or cato basina-having-a curved bottom wall for the Aes Vpurpose presently to beexplained, and 'adjacent to the bottom wall 1s a1 lateral portor openingc3 through which the water of c one densation' may pass into the"siphondischarge passage. Surrounding the port or ol'pening c3 is a'seat@of woodite "5 or other e suitable composition to afford the proper seat,for the ball valve. 'l

n b is a ball valve of any-buoyant materia such as cork, or of hollowmetal such asalu- ,minum or brass.A Thei ball o is free within thechamber a so as to rise in the `chamber and oat upon thewater thatcollects therein. Normally theball b rests against the valve seat c4 ofthe valve openings3 toclose the outlet from chamber a' into the 'Siphon-'passage way. The shape of the bottom wall l of chamber a is such Withrelation to the seat of theport c3 that the ball will beheld by itsengagement-with the bottom wall into lclosed engagement with the lvalveseat. lIn addition to this the 'chamber a,- being in open communicationwiththe steam pipe or cyl# inder to which the trap is attached, it willbe observed that the pressure of the' steam in the pipe or cylinder willalso tend to hold the ball b in closing contact with the seat of the@outlet port.` 1 v 1 l Formed in the body 'of the Steam trap'atSpecification of Letters Patent Patented March 23, 1909.

vSiphon `assage C. The inner Siphon leg c is closed ythebottom wall cjust below the port c3 which leads intovitv from the chamber a; whilethe other siphon leg cZ-leads into the discharge or outlet endv bof thetrap.

A rotaryvalve D maybe provided as shown wall of the. casing of the trapin valinenient with the port c3, so as to regulate the size of ful inentirely closing upgt e opening c3 to y f withv its stem threadedthrough the outer his inventionrelates to an automatic vthe openingthrough port c3 or to engage the ball to force it away from its seat insaid opening.- This valve Dv may also prove useprevent the'esca e ofsteam in the event of the oat or ball `being out of order.

It will be observed. that iu operation the water ofcondensation-collecting in the main chamber a willfloatthe ball b awayfrom the port c3 andv allow Water of condensation to pass through saidopening into the leg c of m siphon passage, from which it is dischargedinto the leg c?, the ball being again lre-seated'upon the porto3 afterthe water of condensation has passed from chamber a.

WhatI claim'is:

1. vA steam trap having a main chamber a` anda Siphon discharge passagec, c2 in communication with saidmain chamber through `a lateral port03,'and' afloat b-in the chamber a, adapted to be seated upon saidlateral port. c3, substantially as set forth.

2.. A steam trap having a main chamber a formed With a curved bottomwalland a lateral escapelport c3, a float valve within the valve bwithin casing a adapted to be lseated in said escape port c3, and alvalve D suitably mounted in the casing in position to control@4 thedischargeport c3 independently of the ball Valve.

Witnesses:

JAMES L. WEIGHT, HUGH DICK.

